Home / 61,239.20-91,761.60-40,438.40

Finding the Fourth Proportional to 61,239.20, 91,761.60 and 40,438.40

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Solution

The fourth proportional to 61,239.20, 91,761.60 and 40,438.40 is: 60,593.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,239.20 : 91,761.60 = 40,438.40 : x
  2. Step 2: Convert to fraction form
    61,239.20/91,761.60 = 40,438.40/x
  3. Step 3: Cross multiply
    61,239.20x = 91,761.60 × 40,438.40
  4. Step 4: Simplify right side
    61,239.20x = 3,710,692,285.44
  5. Step 5: Solve for x
    x = 3,710,692,285.44/61,239.20
  6. Step 6: Final answer
    x = 60,593.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.